Device Profile Area
CAN-CBX_Pt100
Manual • Doc.-No.: C.3032.21 / Rev. 1.1
Page 85 of 120
8.10.4 AI Autocalibration (6111
h
)
Index
Sub-
index
Description
Value range
Default
Data type
Access
mode
6111
h
0
number_of_entries
4
4
unsigned 8
ro
1
AI_autocalibration_1
no default, write:
69 6C 61 63
h
(= ASCII: ‘i’ ‘l’ ‘a’ ‘c’)
unsigned 32
wo
2
AI_autocalibration_2
unsigned 32
wo
3
AI_autocalibration_3
unsigned 32
wo
4
AI_autocalibration_4
unsigned 32
wo
Function:
Writing the ASCII-strings “cali” leads to the automatic-calibration of the corresponding channel.
The automatic-calibration starts automatically:
?
after detection of new temperature sensors
?
after change of the parameter
• Sampling-Rate
AI_ADC_sampling_rate (object 6114
h
) or
• Gain
ADC_PGA (object 2400
h
)
• Measuring current
current_source_value (object 2410
h
)
?
after exceeding a defined change in temperature of the circuit board since the last calibration
(if enabled)
• temperature measured during the last calibration
last_calibration_temp (object 2421
h
)
• maximum allowed temperature difference since the last calibration
delta_calibration_temp (object 2422
h
)